Ampoule syringe



2 Sheets-Sheet 1 ATTO INVENTOR. Arfhur' E. Smfh.

June 10, 1941. A. E. SMITH v AMPOULE SYRINGE Filed May 20, 1940 2 W X4www June 10, 1941. A. E. SMITH AMPOULE SYRINGE Filed May 20, 1940 2Sheets-Shee'fI 2 Patented June 10, 1941 UNITED STATES PATENT oFl-"lcEAMPOULE sYmNGE Arthur E. smith, Los Angeles, Calif. Application May zo,1940, serial Nofsaauo 9 Claims.

This invention relates i to improvements in hypodermic syringes.

Thergeneral object of the invention is to provide a novel syringe of theampoule receiving type which is adapted for making fresh anaestheticsolutions prior to injection.

Another object of the invention is to provide a novel syringe of theampoule receiving type wherein a fresh solution is prepared in theampoule after the ampoule is placed in the syringe.

A further object of the invention is to provide a syringe of the abovementioned type wherein the ampoule is firmly seated in the syringebefore the solution is mixed. v

A still further object of the invention is to provide a syringe of theabove mentioned type including a novel plunger mechanism which includesmeans operable to cause the mixture of a fresh solution in the ampoule.

Other objects and the advantages of this invention will be apparent fromthe following description taken in connection with the accompanyingdrawings, wherein;

Fig. 1 is a fragmentary central VlongitudinalY sectional lv iew partlyin elevation of my improved syringe with an ampoule member therein;

Fig; 2 is a fragmentary view similar to Fig. 1 showing the upper ampoulestopper punctured;

Fig. 3 is a fragmentary view similar to Fig. 2

showing the syringe plunger forcing the upper ampoule stopper towardsthe discharge end;

Fig. 4 is a reduced fragmentary side elevation of the syringe shown inFig. 1 showing the head member in an open position;

Fig. 5 is a fragmentary central longitudinal sectional View partly inelevation showing a modified form of syringe and ampoule;

Fig. 6 is a fragmentary view similar to Fig. 5 showing the upper ampoulestopper punctured;

Fig. 7 is a fragmentary view similar to Fig. 6 showing the upper ampoulestopper being forced towards the discharge end; and

Fig. 8 is a fragmentary central longitudinal sectional view of amodified form of ampoule.

Referring to the drawings by reference characters I have indicated myimproved syringe generally at I0. As shown the syringe I includes abarrel portion I2 the lower portion of which includes a front or tipmember I3. The tip I3 includes a reduced threaded portion I4 and has areduced hole I therethrough.

The syringe I 0 further includes a rear member Iwhich includes a baseportion II having deaperture 42 therein.

(cl. 12s-218.1)

pending ears I8 thereon which are recessed as at I 9 to receive pivotpins 20 on the barrel I2.

The head member I6 has a hole 2l therethrough in which a sleeve member22 is secured. The sleeve member 22 includes an enlarged flange portion23 which is spaced a predetermined distance above the top of the headmember I6 and positioned vin the space between the flange 23 and thehead member a finger grip member 24 is provided. v

The sleeve member 22 has a recess 25 therein opening through the bottomthereof and a reduced aperture 26 communicating with the recess andopening through the top. The side walls of the sleeve 22 have a pair ofopposed elongated slots 21 -therein opening into the recess 25 andthrough the bottom of the sleeve. The lower end of the sleeve 22 isinclined from the side of one of the slots V2'I to the side of the otherslot 2'I to provide cam surfaces as indicated at 28.

Positioned in the sleeve aperture 26 a shank member 29 is provided whichincludes an enlarged head 36 positioned in thesleeve recess 25. The head30 has opposed `extending lugs 3I thereon which in one position of thehead 30 are positioned in the sleeve slots 21 as shown in Fig. 1 and inanother position of the head engage the cam surfaces 28.

' The headV 30 has an open bottomed recess 32 therein and the shank 29has a coaxial bore 33 therein which opens through the top thereof andcommunicates with the head recess 32.

Postionedin the bore 33 I provide a plunger rod 34 the'upper portion ofwhich is externally threaded as at 35 to engage similar threads of athreaded recess 36 in a cross bar 31. The plunger rod 34 has a bore orrecess 38 therein which opens through the bottom thereof and terminatesadjacent the threaded portion 35 (see Fig. 2).

` Positioned in the plunger rod bore 38 adjacent the lowerend thereof Iprovide a plug member 39' which includes'an enlarged flanged headportion 46 which extends over the lower end of the plunger rod 34toiprovide an enlarged plunger head. The plug member further has reducedWithin the plunger rod b'ore 38 I provide a slide bar 43 of apredetermined length which'is connected to an enlarged ring member`44surrounding the' plunger rod 34 by a pin 45 positioned in opposedelongated apertures 46 in the plunger rod adjacent the cross bar 31. j

Secured to the slide bar 43 and projecting beyond `the lower endthereofI provide a reduced rod 41 having a sharpened lower end which isVpositioned in the aperture 42 of the p1ug member 39. Surrounding therod 41 between the plug 39 and the slide bar 43 I provide a coiledexpansion spring 48 which resiliently urges the slide bar 43 to aretracted position towards the cross bar 31.

When the slide bar 43 is in a fully retracted position as shown in Figs.1 and 3 the sharpened lower end of the rod 41 is above the lower surfaceof the plunger rod head 40. Positioned in the syringe Abarrel I2 I haveshown an ampoule which is indicated generallyat 50. As shown the ampoule55 includes an elongated cylindrical glass body portion 5I closed at thelower end by a rubber stopper 52 and at the upper end by a rubberstopper 53. e

The lower stopper 52 includes an enlarged flange portion 54 extendingover the lower end the collar 44 is released, move the slide bar 43 i'oa normal fully retracted position as shown in Figs. 1 and 3.

Y After the medicament has been discharged into the vehicle the operatorplaces a double ended needle 5I on the tip I3 with the hub portion ofthe needle engaging the threads I4 on the tip. As the double endedneedle 6| is placed on the syringe the inner portion of the needlepunctures the lower stopper 52 and passes through the stopper recess 56into Ythe enlarged recess 55 as shown in Fig. 1.

Y Y To inject the liquid in the ampoule the operator moves the plungerrod 34 towards the ampoule until the head engages the stopper 53.Thereafter upon further movement of the plunger rod towards the tip theupper stopper 53 acts as a of the ampoule body. Opening throughthe topthereof the stopper 52 has a recess 55 therein and opening into. thelrecess 55 the stopper includesa reduced recess 56 the bottom of whichis spaced a predetermined distance from the lower face of the stopper.

The upper stopper 53 includes a body portion 51-having an open bottomedrecess 58 therein and a trap door-like portion 59 spaced a slightdistance below the body and integrally connected thereto at one point byan extended portion of the body. Y v A medicament shown as a tablet 60but which may be in liquid form or powder form as shown in Fig. l isplaced in the stopper recess 58. The space within the ampoulebody 5Ibetween the lower stopper 52 and the upper stopper 53 is filled withasuitable Vehicle for the medicament s uchfas distilledwater. 1

To load the syringe I9 an operator rotates the shank 29 until the lugs37| thereon enter the elongatedapertures 21 ,in the sleeve 22 and thenmoves the shank and plunger rod upward to the positionshown in Fig'. 1.Y Thereafter the head member le is swung about the pivots 20 to one sideasV shown in Fig. 4. An ampoule 50 is then positioned in the syringebarrel I2 with the lower ampoule -stopper'52 engaging the inner face ofthe tip I3. i

After the ampoule is positioned in the syringe barrel the head I6 isagain swung into alignment with the-barrel I2 and then the shank 29 ismoved downward until the lugs 3| move out of the Vslots 21 thereafterthe shank is rotated whereupon the engagement of the lugs 3| with thecamsurfaces 28 move the head 3U into rm Y engagement with the'upper endof the ampoule body.` l

y'Thereafter the operator holds the plunger rod 34 in Va retractedposition and moves the collar 64 towards the syringe barrel. As thecollar 44 is thusmoved it'movesthe slide bar 43 and rod 41 againsttheaction of "the spring 48 towards the tip I3. As the rod 41 is thusmoved it -punctures-.the top wall of thestopper 53 and engages the`tablet 5I] which inturn forces theA stopper flange 59. downward andVenters the vehicle withinthe ,ampoule wherein it dissolves..

VWhen a vpowderor liquid medicament is placed in thekrecessxofthestopperl 53,1the rod' 41 continues ;'downward through the medicament andengagesthestopper fiange 59 andiswings itV downward as shown in' Fig.y2l thereby allowing the medicament andvehicle to mix.

The v'sprin'g is of suflil'ient 'strengththat afterthe rod 41 haspuncturedthe stopper 53 and dischargedV 'the me'dicamentr'i'tr'will,whenpiston and forces the liquid in the ampoule out through the needle 6I To unload the syringe the plunger rod 43 isv withdrawn from theampoule and through the shank 29 is rotated until /the lugs 3I enter theapertures 21 and then both the shank and the plunger rod are moved to afully retracted position as shown in Fig. 1. Thereafter the head I6 isswung about the pivots 20 and swung to one side as shown in Fig. 4 afterwhich the ampoule may be removed.

In Figs. 5, 6 and '1 I have indicated a syringe generally' at 65 whichis similar in most respects to the syringe I Il and like portionsthereof Iare indicated by similarly primed reference numerals. TheVdiierence between the syringes land 65 is that the upper ampoulestopperpuncturing rod is eccentric with respect to the axis of the syringebarrel and necessitates replacing the plug member 39 and the rod 41. f

Positioned in the recess 38' of the plunger rod 34 adjacent the lowerend I provide an elongated plug member 66 which has an enlarged head 61longitudinal aperture'68 Vtherein which` is offset at one side of thelongitudinal axis thereof which at one end opens through'the head 61 andat the opposite end opens into anenlarged recess 69. Secured to theslide bar 43 and projecting 'beyond the lower end thereofV I provide aVre-v duced rod 10 which includes an upper portion coaxial with the axisof the bar 43 and an offset lower portion 12 which is positioned in theoffsetA Vaperture 68 in the plug member 6B.

. Positioned in the syringe barrel I2 I have indicated an ampoulegenerally at 13. The ampoule 13 lncludes an elongated hollow cylindricalglass body portion 1-4 closed at the lower end by a rubber stopper 15and at the upper end by a rubber stopper 16. The lowerstopper 15 vissimilar to the stopper 52 and like portions thereof Positioned in theampoule y'below tl1e.stopper 4lliy I provide a rubber disk memberljwhich may be spaced a'predetermineddistance below thepbottom-ofthe'stopfperg'l. or it may engageV the inner end of thestpper'll` asshovvnu'in Fig. 5,

A medicamentv in form which in'this stance is shownas apowder;19.is.positioned in the stopper recess-11. 'The syringev65irsloaded and the ampoule'clamped in place the same 'manner aspreviously describedinhconneetifn with the syringe I0. The space in theampoule between the upper and lower Stoppers is filled with a suitablevehicle such as distilled water.

After the ampoule 13 has been positioned in the syringe the collar 44'is moved towards the barrel I2 whereupon the lower portion 12 of the rod'I0 punctures the stopper 18 and passes through the powdered medicament19 and engages the disk 18 at one side of the axis thereof and swings itto a tilted position as shown in Fig. 6 thereby allowing the liquidvehicle to contact and dissolve the medicament.

' The ejection of the liquid from the ampoule 13 and the unloading ofthe syringe 65 are the same as previously described in connection withthe syringe HJ.

VIn Fig. 8 I have indicated an ampoule generally at 80 which may be usedin the syringe 65. As shown the ampoule 88 includes an elongated hollowcylindrical glass 'body 8| closed at the lower end by a rubber stopper82 and at the upper end by a rubber stopper 83.

The lower stopper 8'2 is similar in all respects to the previouslydescribed stopper 52 and like portions thereof are indicated bysimilarly double primed reference numerals.

The upper stopper 83 has a recess 84 therein opening through the topthereof and a recess 85 therein spaced from the recess 84 and open-4 ingthrough the Ibottom thereof.` Positioned in the ampoule body 8| apredetermined distance below the stopper 83 I provide a rubber disk 86.

The space between the stopper 83 and the disk 86 is filled with a liquidmedicamentf'l which extends into the stopper recess 85. The spacebetween the lower stopper 82 and the disk 86 is lled with a suitableVehicle such as distilled water. v y

To mix the medicament and the vehicle and eject the liquid from theampoule 80 it is placed in the syringe B and the sequence of operationsis the same as previously described in connection with the ampoule 13.

From the foregoing description it will be apparent that I have provideda novel hypodermic syringe which is simple in construction and highlyefcient in use.

Having thus described my invention I claim:

l. In a syringe, a barrel having a front member and a rear memberthereon, means on said rear member adapted to engage an ampoule in thebarrel, a plunger slidable through the rear member, said plunger beinghollow, a slide bar slidably mounted in the outer end of said plunger,means for moving the slide bar, means normally urging said slide baroutwardly and a rod mounted on said slide bar, said rod having a pointedend normally disposed in the plunger.

2. In a syringe, a barrel having a front member and a rear memberthereon, a shank mounted in said rear member and adapted to engage anampoule in the barrel, said shank having a bore therethrough, a plungerslidable in said bore, said plunger being hollow, a slide bar slidablymounted in the plunger, means slidable along the plunger for moving theslide bar, means normally urging said slide lbar outwardly and a rodmounted on said slide b ar, said rod having a pointed end ampoulepiercing end normally disposed within the plunger.

3. In a syringe, a barrel having a front and a rear member thereon, ashank member mounted in said rear member and adapted to engage anampoule in the barrel, said shank member having a bore therethrough, aplunger slidable ln said bore, said plunger being hollow and having a'plug member secured in the inner end thereof, a slide bar slidablymounted in the outer end of said plunger, means slidable along saidplunger for moving said slide bar, means normally urging said slideoutwardly, and a rod mounted on said slide bar, said plug member havinga recess receiving said rod, said rod having a pointed innerv end andnormally disposed in the plug member and movable when the slide barmoving means is moved.

4. In a syringe, a barrel having a front and a rear member thereon, ashank member mounted in said :rear member and adapted to engage anampoule in the barrel, said shank member having a bore therethrough, aplunger slidable in said bore, said plunger `being hollow and having aplug member secured in the inner end thereof, a vslide bar slidablymounted in the outer end of said plunger, a collar slidable on saidplunger, means connecting said plunger and said slide bar, a springengaging the inner end of said slide bar and the outer endof said plugmember, a rod mounted on said slide bar, said plug member having arecess receiving said rod, said rodv having a pointed inner end andnormally disposed in the plug member and movable when the collar ismoved.

5. In a syringe, a barrel having a front and a rear member thereon, ashank member mounted in said rear member and adapted to engage anampoule inthe barrel, said shank member havinga bore therethrough, aplunger slidable in said bore, said plunger being hollow and having aplug member secured in the inner end thereof, a slide bar slidablymounted in the outer end of said plunger, said plunger having opposedslots in the outer end thereof, a collar on said plunger, a pin passingthrough said slots and through said slide bar and through said collar, aspring engaging the inner end of said slide bar and the outer end ofsaid plug member, a rod mounted on said slide bar, said plugmember-having a recess receiving said rod, said rod having a pointedinner end and normally disposed in the plug member and movable when thecollar is moved.

6; In an ampoule syringe, a barrel having a front member thereon, a rearmember pivotally mounted thereon and movable from a position closing theend of the barrel to a position at one side of the barrel to permit anampoule to be inserted in the barrel, a sleeve member mounted inv saidrear member, a flange on said sleeve member, a finger grip memberengaging said flange, a shank slidable in said sleeve member, a head onsaid shank, lugs on said head, said sleeve member having elongated slotsin which said lugs are slidable, the inner end of said slots being open,the inner end of said sleeve member having cam surfaces engageable bysaid lugs, and an ampoule in said barrel and engageable by the end ofsaid shank head when the lugs engage said cam surfaces.

7. In an ampoule syringe, a barrel having a front member thereon, a rearmember mounted on the barrel, a sleeve member in said rear member, ashank slidable in said sleeve member, a head on said shank, an ampoulein said barrel and engageable by the end of said shank head, means tohold said shank head against the ampoule, said shank and said shank headhaving a bore therethrough, a plunger slidable in said bore, saidplunger being hollow and having a plug member secured in the inner endthereof, a slide bar slidably mounted in the outer end of said-plunger,said plunger having opposed slots in the outer end thereof, a collar onsaid plunger, a pin passing through said slots and through said slidebar and through said collar, a spring engaging the inner end of saidslide bar yand the outer end of said plug member, a rod mount,- ed onsaid slide bar, saidplug member having a recess receiving said rod, saidrod having a pointed inner end normally disposed in the plug member,said rod being movable when said collar is moved, a medicinalcompartment forming device in said ampoule, said device including amovable partition member, a medicinal preparation in said device, astopper in the ampoule remote from the device, a vehicle for thepreparation Ibetween the stopper and the device, the pointed end of saidrod being operable by said collar to move the partition member andpermit the" medicinal preparation to mingle with the vehicle'.

8. In a syringe, a barrel having a front mem-V ber thereon, a'rearmember mounted on the barrel, a'sleeve member mounted in said rear mem-AY ber, arshank slidable Vin said sleeve member, a

head on the shank and adapted to engage an ampoule in said barrel, saidshank and said shank head having a bore therethrough, a plunger slidablein said bore, said plunger being hollow and having a plug membersecuredin the inner end thereof, a slide bar slidably mounted in theouter end of said plunger, said plunger having opposed slots in theouter end thereof, a collar on said plunger, a pin passing through saidslots and through said slide bar and through said collar, a springengaging the inner end of said slide bar land the outer end of said plugmember, a rod mounted on said Vslide bar, said plug member having arecess receiving said rod, said rod having its entire axis aligned withthe axis'of the barrel and having a pointed inner end normally disposedin the plug member, and movable when said collar is moved, and adaptedto pierce Yan ampoule closure. l

9. In an ampoule syringe, a barrel having a front member thereon, a rearmember pivotally mounted Von the barrel 'and movable from a po-r sitionacrossthe barrel to a position at one side of the barrel to permitinsertion of an ampoule into the barrel, a sleeve member mounted in saidrear member, a flange on said sleeve member, a ngergrip member engagingsaid ange, a shank slidable in said sleeve member, a head on saidshank,:lugs on said head, said sleeve member having elongated vslotsinwhich said lugs are slidable, the innerend ofV said slots being open,the inner end of saidisleeve member having cam surfaces engageable' 'bysaid lugs, an ampoule in said barreland engagable by the end of saidshank head when the lugs engage said cam surfaces, said shank and saidshank head having a bore therethrough, a plunger slidable in said bore,said plunger-.being hollow and having a plug member secured in the innerend thereof, a slide bar slidably mounted in the outer end ofsaidrplunger, said Aplunger having opposed slots in the outer endthereof, acollar on said plunger,l a pin passing through said slots andthrough said slide vbar and through said collar, a spring engaging theinner end of said slide bar and the outer end of said plug member, a rodmounted on said slide. bar, said plug member having a hole through whichsaid rodextends, 'said rod including anl outer portionrcoaxial with theplunger axis and a pointed inner end portion at one side of Ithe axis ofthe barrel and normally dis` posed in the plug member, a stopper in saidampoule adjacent said shank, said stopper having a hole therein, amedicinal preparation in saidV

